This standard stipulates the elements, types and application methods of formwork composed of parts that meet the requirements of GB4169.1~4169.11. This standard applies to thermoplastic injection molds with a perimeter size ≤ 560mm×900mm, and also applies to thermosetting plastic injection molds with the same perimeter size.
1990GB/T 12556.1-1990 Injection mould for plastic--Medium size and small size mould bases
GB/T 12556.1-1990 Injection mould for plastic--Medium size and small size mould bases was changed to GB/T 12555-2006 Injection mould bases for plastics.